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Hadoop >> mail # user >> Re: Hadoop cluster hangs on big hive job


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Re: Hadoop cluster hangs on big hive job
Problem I could see in you log file is , No available  free map slot for
job.
I think you have to increase the block size to reduce the # of MAP , Bcz
you  are passing Big data as Input.
The  ideal approach is , first increase the
  1) block size,
   2)  mapp site buffer
    3) jvm re-use  etc.

regards,
samir.
On Fri, Mar 8, 2013 at 1:23 AM, Daning Wang <[EMAIL PROTECTED]> wrote:

> We have hive query processing zipped csv files. the query was scanning for
> 10 days(partitioned by date). data for each day around 130G. The problem is
> not consistent since if you run it again, it might go through. but the
> problem has never happened on the smaller jobs(like processing only one
> days data).
>
> We don't have space issue.
>
> I have attached log file when problem happening. it is stuck like
> following(just search "19706 of 49964")
>
> 2013-03-05 15:13:51,587 INFO org.apache.hadoop.mapred.TaskTracker:
> attempt_201302270947_0010_r_000019_0 0.131468% reduce > copy (19706 of
> 49964 at 0.00 MB/s) >
> 2013-03-05 15:13:51,811 INFO org.apache.hadoop.mapred.TaskTracker:
> attempt_201302270947_0010_r_000039_0 0.131468% reduce > copy (19706 of
> 49964 at 0.00 MB/s) >
> 2013-03-05 15:13:52,551 INFO org.apache.hadoop.mapred.TaskTracker:
> attempt_201302270947_0010_r_000032_0 0.131468% reduce > copy (19706 of
> 49964 at 0.00 MB/s) >
> 2013-03-05 15:13:52,760 INFO org.apache.hadoop.mapred.TaskTracker:
> attempt_201302270947_0010_r_000000_0 0.131468% reduce > copy (19706 of
> 49964 at 0.00 MB/s) >
> 2013-03-05 15:13:52,946 INFO org.apache.hadoop.mapred.TaskTracker:
> attempt_201302270947_0010_r_000024_0 0.131468% reduce > copy (19706 of
> 49964 at 0.00 MB/s) >
> 2013-03-05 15:13:54,742 INFO org.apache.hadoop.mapred.TaskTracker:
> attempt_201302270947_0010_r_000008_0 0.131468% reduce > copy (19706 of
> 49964 at 0.00 MB/s) >
>
> Thanks,
>
> Daning
>
>
> On Thu, Mar 7, 2013 at 12:21 AM, Håvard Wahl Kongsgård <
> [EMAIL PROTECTED]> wrote:
>
>> hadoop logs?
>> On 6. mars 2013 21:04, "Daning Wang" <[EMAIL PROTECTED]> wrote:
>>
>>> We have 5 nodes cluster(Hadoop 1.0.4), It hung a couple of times while
>>> running big jobs. Basically all the nodes are dead, from that
>>> trasktracker's log looks it went into some kinds of loop forever.
>>>
>>> All the log entries like this when problem happened.
>>>
>>> Any idea how to debug the issue?
>>>
>>> Thanks in advance.
>>>
>>>
>>> 2013-03-05 15:13:19,526 INFO org.apache.hadoop.mapred.TaskTracker:
>>> attempt_201302270947_0010_r_000012_0 0.131468% reduce > copy (19706 of
>>> 49964 at 0.00 MB/s) >
>>> 2013-03-05 15:13:19,552 INFO org.apache.hadoop.mapred.TaskTracker:
>>> attempt_201302270947_0010_r_000028_0 0.131468% reduce > copy (19706 of
>>> 49964 at 0.00 MB/s) >
>>> 2013-03-05 15:13:20,858 INFO org.apache.hadoop.mapred.TaskTracker:
>>> attempt_201302270947_0010_r_000036_0 0.131468% reduce > copy (19706 of
>>> 49964 at 0.00 MB/s) >
>>> 2013-03-05 15:13:21,141 INFO org.apache.hadoop.mapred.TaskTracker:
>>> attempt_201302270947_0010_r_000016_0 0.131468% reduce > copy (19706 of
>>> 49964 at 0.00 MB/s) >
>>> 2013-03-05 15:13:21,486 INFO org.apache.hadoop.mapred.TaskTracker:
>>> attempt_201302270947_0010_r_000019_0 0.131468% reduce > copy (19706 of
>>> 49964 at 0.00 MB/s) >
>>> 2013-03-05 15:13:21,692 INFO org.apache.hadoop.mapred.TaskTracker:
>>> attempt_201302270947_0010_r_000039_0 0.131468% reduce > copy (19706 of
>>> 49964 at 0.00 MB/s) >
>>> 2013-03-05 15:13:22,448 INFO org.apache.hadoop.mapred.TaskTracker:
>>> attempt_201302270947_0010_r_000032_0 0.131468% reduce > copy (19706 of
>>> 49964 at 0.00 MB/s) >
>>> 2013-03-05 15:13:22,643 INFO org.apache.hadoop.mapred.TaskTracker:
>>> attempt_201302270947_0010_r_000000_0 0.131468% reduce > copy (19706 of
>>> 49964 at 0.00 MB/s) >
>>> 2013-03-05 15:13:22,840 INFO org.apache.hadoop.mapred.TaskTracker:
>>> attempt_201302270947_0010_r_000024_0 0.131468% reduce > copy (19706 of
>>> 49964 at 0.00 MB/s) >
>>> 2013-03-05 15:13:24,628 INFO org.apache.hadoop.mapred.TaskTracker:
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB